Overview
The AD724JR-REEL, produced by Analog Devices Inc., is a low-cost RGB to NTSC/PAL Encoder. This integrated circuit converts red, green, and blue color component signals into their corresponding luminance and chrominance signals, adhering to either NTSC or PAL video standards. The device is designed to provide composite video output and can drive 75 Ω, reverse-terminated cables. It operates on a single +5 V supply and does not require external delay lines or filters, making it a compact and efficient solution for various video encoding applications.
Key Specifications
| Parameter | Description |
|---|---|
| Supply Voltage | +5 V ± 5% |
| Operating Temperature | 0°C to +70°C |
| Package Type | 16-Lead SOIC Wide |
| Clock Input | FSC or 4FSC clock, or parallel-resonant crystal (3.58 MHz for NTSC, 4.43 MHz for PAL) |
| Sync Inputs | Accepts HSYNC, VSYNC, or CSYNC signals |
| Output Types | Composite Video, Separate Y/C (S-Video), Luma and Chroma Outputs |
| Load Driving Capability | 75 Ω, reverse-terminated cables |
| Logic Compatibility | TTL, 3 V and 5 V CMOS compatible |
Key Features
- Low-cost, integrated solution for RGB to NTSC/PAL encoding
- Operates on a single +5 V supply
- No external delay lines or filters required
- Accepts FSC or 4FSC clock, or parallel-resonant crystal
- Composite video and separate Y/C (S-Video) outputs
- Luma and chroma outputs are time-aligned
- Onboard DC clamp and phase lock to external subcarrier
- Logic selectable NTSC or PAL encoding modes
- Compact 16-Lead SOIC package
Applications
- Computer graphics and video processing
- Video cameras and camcorders
- Consumer electronics and multimedia devices
- Industrial and commercial video systems
Q & A
- What is the primary function of the AD724JR-REEL? The AD724JR-REEL converts RGB color component signals into NTSC or PAL video signals.
- What is the operating voltage of the AD724JR-REEL? The operating voltage is +5 V ± 5%.
- Does the AD724JR-REEL require external delay lines or filters? No, it does not require external delay lines or filters.
- What types of sync signals can the AD724JR-REEL accept? It can accept HSYNC, VSYNC, or CSYNC signals.
- What are the output types of the AD724JR-REEL? The outputs include composite video, separate Y/C (S-Video), and luma and chroma signals.
- Can the AD724JR-REEL drive 75 Ω loads? Yes, it can drive 75 Ω, reverse-terminated cables.
- Is the AD724JR-REEL compatible with TTL and CMOS logic? Yes, it is compatible with TTL and 3 V and 5 V CMOS logic.
- What is the package type of the AD724JR-REEL? It comes in a 16-Lead SOIC Wide package.
- What are the typical applications of the AD724JR-REEL? Typical applications include computer graphics, video cameras, consumer electronics, and industrial video systems.
- Can the AD724JR-REEL be powered down when not in use? Yes, it can be powered down when not in use.
